Our Sages, of blessed memory, instruct us to begin with the Book of Leviticus [Vayikra], specifically, in teaching schoolchildren, so that the issue of humility should be learned first, for it is required for Torah study. A person lacking humility, even if they are a great Torah scholar, is not beloved by the Almighty. That is why there is a small aleph in the word Vayikra: so that pupils may ask why, and teachers can explain, as above, concerning our Master Moses' humility, and that the notion reach the child's mind. This is a fundamental principle in Torah.